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DAEWOO ELECTRONICS FRN-U20IC Service Manual Download Page 61

60

7-5. Brazing Reference Drawings.

▶

Welding Point

●

■

Copper Welding (Ag 5%)

7 Points

3 Points

Silver Welding (Ag 35%)

Hot Pipe

F

R

Evaporator

Condenser

I-Pipe

Accumulator

Suction Pipe

Dryer

Capi-Tube

Pipe Suc Conn

Pipe Conn B

Compressor

▶

Flow of Refrigeration Cycle

Com

p

ressor

Pipe Conn. B

Wire-Con. Pi

pe

Hot Pipe

Dryer

Capillary

 Tub

e

Evaporator

Accum

u

lator

Pipe Sucti

on 
Conn

Suction Pi

pe

High

Low

Summary of Contents for FRN-U20IC

Page 1: ...ay 2006 Caution In this Manual some parts can be changed for improving their performance without notice in the parts list So if you need the latest parts information please refer to PPL Parts Price Li...

Page 2: ...mary of Heavy Repair 55 7 2 Precaution during Heavy Repair 56 7 3 Practical Work for Heavy Repair 57 7 4 Standard Regulations for Heavy Repair 59 7 5 Brazing Reference Drawing 60 8 INSTALLATION GUIDE...

Page 3: ...em 7 Make sure the hook is correctly engaged Remove dust and foreign materials from the housing and connecting parts 8 Do not fray damage machine heavily bend pull out or twist the power cord 9 Please...

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Page 8: ...Li 361 Li Refrigerator 895 mm x 731 5mm x 1790 mm 104kg 339 Li 198 Li 537 Li FRS N U20IC External Dimension Width x Depth x Height Weight 334 Li Refrigerator 170 Li Freezer 504 Li Total ISO Storage Vo...

Page 9: ...el Model Name AC250V 10A 77 Fuse Temp Defrost PBN 38 F Sensor D Sensor D E F O R E S T AC220V 5W Water Pipe Heater AC220V 5W Dispenser Heater AC220V 8W Louver Heater H E A T E R SP201R 7DL SP201R 7DR...

Page 10: ...ccessive temperature mode 3 Initial mode by power input 3 Whenever pressing button setting is repeated in the order of Medium 3 Medium Max 4 Max 5 Min 1 Medium Min 2 INPUT CONTROL OBJECT CONTENTS REMA...

Page 11: ...n 22 Max 3th Press 16 Min 4th Press 18 6th Press 17 21 20 Temp indication 5th Press 2nd Press 1st Press Temperature Change 4 1 2 FRS N U20BC Type Letters are indicated on 88 Display LED Temperature ad...

Page 12: ...is chosen the icon FREEZER QUICK is ON After six month LED ON FILTER CHANGE ICON Dial ICE MAKER LOCK ICON Dial LOCK ICON Dial WATER CUBED ICE CRUSHED ICE ICON Always ON FUZZY DEODORIZER ICON Dial SUP...

Page 13: ...y pushing ICE MAKER LOCK button again ICE MAKER LOCK icon is off WATER icon is on 8 RESET WATER FILTER button 1 The normal ICON OFF is on for 6 month after are first power input 2 After sic months ico...

Page 14: ...fan R fan Heater etc OFF Fan Delay Time 5 minutes Comp ON and F fan R fan Heater OFF 4 2 Defrost Mode 2 The defrost mode start with the following conditions 1 Total operation time of comp becomes 6 8...

Page 15: ...ng time is over 24 hours Total time is over 60 hours Comp operating time is over 6 hours End Defrosting start Comp operating time is over 2 hours Any error NO YES NO NO YES Total door open time is ove...

Page 16: ...p F fan R fan Heater etc OFF Fan Delay 1 Time 5 minutes Comp ON F fan R fan Heater OFF Pause Fan Delay Heater Defrosting 2 How to start Push REF TEMP Set button 5 times while pushing FRZ TEMP Set butt...

Page 17: ...uttons 2 Door Switch 3 Initial Power Input Buzzer 4 5 Buzzer or Alarm Control 1 Control refrigerator compartment lights R Lights turn ON OFF by R door switch ON OFF For 10 minutes after sensing door o...

Page 18: ...ain INPUT CONTROL OBJECT CONTENTS REMARKS 1 FRZ TEMP 2 Door Switch Comp F R Fan Heater 4 7 1 FRS N U20IC Type 4 7 Demonstration 1 Start Push SUPER REF button 5 times while pushing REF SET button simul...

Page 19: ...OFF except for F fan R fan 2 Fan Control Door OPEN Fan ON Door close Fan OFF 3 Stop or termination 1 During Demo mode push ICE WATER button 5 times while pushing FREEZER SET button simultaneously 2 P...

Page 20: ...1 In case of weak ref cut J1 or J18 to down the standard resistance by 1 5deg 2K 2 In case of weak ref cut J2 or J19 to down the standard resistance by 1 5deg 2K 4 8 Compensation of R sensor ON OFF T...

Page 21: ...MP button at the error display mode REF LED 1 is on and off twice Forced defrost mode for A S REF LED 1 is on Full Down mode REF LED 1 is on and off EEPROM defective REF LED 2 is on and off Return aft...

Page 22: ...tomatically in 4 minutes from the start 3 All the error codes are reset if they turn to be normal 4 Error code INPUT CONTROL OBJECT CONTENTS REMARKS Temperature Control Buttons 88 Display CLED Display...

Page 23: ...for more than 1 hour Control Deletion of function related door switch sensing If door switch open close is sensed the error is terminated automatically 6 Cycle error Cause in case comp works for over...

Page 24: ...2 How to stop 1 Push LOCK button 1 time 2 It stops automatically in 4 minutes from the start 3 All the error Codes are reset if they turn to be normal 4 Error code INPUT CONTROL OBJECT CONTENTS REMARK...

Page 25: ...l down Check point Measure the voltage of A part on the Main PCB If the voltage is 0 5V 4 5V it is normal If the voltage is 0V short or 5V disconnected change the RT sensor on the Main PCB How to rese...

Page 26: ...5min after water supply doesn t go up Check the I sensor or water supply line 12 ES error MICRO switch error Cause When it senses 1min continuously Check the MICRO switch of the dispenser 14 Eu error...

Page 27: ...EF SUPER FRZ 5 times Pull Down FRZ SET REF SET 5 times Forced Defrosting 4 10 2 FRS N 20BC Type INPUT CONTROL OBJECT Each button 1 All the modes are started LOCK mode except FILTER RESET mode 2 Elemen...

Page 28: ...ing 1 Press TEST switch under the Icemaker for more than 1 second and test starts Test mode starts from ice separating mode In case test switch has an error of short test is done only once START Ice m...

Page 29: ...l Operation proceeds to Ice making mode Ice separating and water supply Modes stop 5 Crusher Function It stops operation when freezer door is open It operates if freezer door is closed 2 Ice making mo...

Page 30: ...used to verify level switch error 2 The rotation of motor is sensed at each zone 3 In case of level switch error ice separation is done by time 4 If ice separating motor has error the mode stop 4 Wat...

Page 31: ...T CONTENTS REMARKS Dispenser switch WATER ICE Button ICE MAKER LOCK Button Freezer Door Switch Dispenser Lamp Crusher Motor Flap Solenoid Crusher Solenoid Dispenser Water Valve 1 Initial mode water Mo...

Page 32: ...l Flow Timing Chart Crushed Ice Cubed Ice Water Delay time A 500ms B 500ms C 2 0s D 5 0s D P SW Gear Motor D P Lamp D P S V Flap D A A C D P SW Cube S V D P S V Flap Gear Motor D P Lamp A C A A B D D...

Page 33: ...32 5 WIRING DIAGRAM 5 1 FRS U20IC R 134a R C Type...

Page 34: ...33 5 2 FRN U20IC R 600a R C Type...

Page 35: ...34 5 3 FRS U20BC R 134a R C Type...

Page 36: ...35 5 4 FRN U20BC R 600a R C Type...

Page 37: ...36 5 5 FRS N U20D E F G R 600a or R 134a R C Type...

Page 38: ...CN1 of M PCB Change F PCB AS Change Main PCB Change the Fuse on the Main PCB Y N N Y N Y Y N Y N Checkup and connect F PCB wires 6 1 Faulty Start F R lights OFF F PCB Power OFF 6 TROUBLE DIAGNOSIS 1 I...

Page 39: ...n Eva And if refrigerant leak is found repair it N N Y Y Y N N Defrost Heater 192W 252 Left lower side of Evaporator 4th pipe from button OLP PTC is OK Does Comp work Any Error code on F PCB F C Motor...

Page 40: ...nd cases in Freezer compartment 1 Removing and replacing Freezer parts Dispenser Model Remove 2 screws of Ice Maker Remove the Housing of Ice Maker AS Right side Remove 4 screws of Geared Motor Remove...

Page 41: ...nd pull forward slowly Remove the screw cap on the F Louver A with a flat tip driver Pull out smoothly the bracket F Lamp AS to remove Remove 3 screws of F Louver A Hold the end of F Louver A and pull...

Page 42: ...Y N N Make enough distance between heat appliances and refrigerator Y N 6 2 2 Ice Formation on F Louver Dews are formed on the gasket surface inside F compartment Gasket has a gap between cabinet Doo...

Page 43: ...lat tip screw driver Into a gap of door switch to pull forward Disconnect the housing and change the switch for a new one 6 2 3 Disconnection breaking of Freezer Lights Wires Freezer light filament is...

Page 44: ...Sensor and check connector Y Y N N 6 3 1 Refrigeration failure Foods does not get cool or cold soon Any error mode on F PCB R Motor works OK R Motor is OK Wiring connection Is OK R Sensor is OK norma...

Page 45: ...on of R door switch is OK 6 3 2 Disconnection Breaking of Refrigerator Lights Wires Change of R Lights Change of F Door Switch Follow the reverse order of disassembling after changing the light Insert...

Page 46: ...efore storing in the compartment Repair and change R motor Y N Y Y Y N N N N Explain not to open doors too long Y N N N Y 6 3 3 Dews on Refrigerator Compartment Dews are formed on the gasket inside R...

Page 47: ...ge the R check valve Change the R sensor Y N N Y Check the R sensor connection Check the connector to Main PCB N Y Refer to Repair Change of Check Valve Y 6 3 4 Excessive Refrigeration of Vegetable Ca...

Page 48: ...emove Lift up a piece of Check Valve Flap and insert a finger to the valve frame to hold out Removing of Check Valve Remove screws of light cover Hold the bottom of cover and pull forward to remove Di...

Page 49: ...arks Compressor sound is somewhat normal because it works like a heart to circulate the refrigerant in the pipes during the refrigerator operation Rattling or metallic touch sound of motor piston of c...

Page 50: ...the users or customers Remarks Water flowing sound hiss or sizzling sound can make while refrigerant in the pipes is changing from liquid to gas state when comp starts or stops It is normal to the re...

Page 51: ...ator 3 Shaking or trembling Sound of Evaporator 1 2 2 When such a sound is made attach a absorber on the tube including 2 welding points Attach a absorber on point accumulator 1 Check whether evaporat...

Page 52: ...Start Change the fan N Y Set it right not to touch Y N Set it right not to move Y N Change the motor assembly N Y Explain to the customers how fan is working to circulate cold air in the compartments...

Page 53: ...Fastening of Fan Motor 1 Check if fan motor frame of the assembly is fastened tightly with screws to the liner wall Unless it is tight vibration of shaking can make 1 Check if sealing sponge on the in...

Page 54: ...a much bent point on the pipe Start Separate the touching pipes if any N Y Apply cushion material between Comp base and Tray drip Y N Move or change the points of vibration absorber rubbers on the pi...

Page 55: ...or insertion to Main PCB is OK N Repair the defective connection Y Door switch itself is OK N Change the switch N Y Check it up Door switch is pushed well Y Attach a thin pad on the door liner or chan...

Page 56: ...ty Bombe mass cylinder refrigerant manifold gauge electronic scales punching off flier gas welding machine Weigh and control the bombe in a vacuum conditions with electronic scales and charge through...

Page 57: ...when repairing pipes and injecting refrigerant Replacement of drier 1 Remove retained refrigerant more than 5 minutes after turning off a refrigerator If not oil will leak inside 2 Remove retained ref...

Page 58: ...ter assembling a drier When replacing a compressor Weld and parts by blowing nitrogen to the low pressure side Note For other parts nitrogen blowing is not necessary because it does not produce oxidiz...

Page 59: ...e weight of refrigerant charged into the bombe by subtracting the weight of an evacuated bombe 4 Refrigerant charging Compressor Evaporator Dryer Condenser Vaccum Pump Hot Pipe Blue Yellow Red High Pr...

Page 60: ...work 6 Pipe arrangement in each cycle 7 4 Standard Regulations for Heavy Repair 1 Observe the safety precautions for gas handling 2 Use JIG or wet towel in order to prevent electric wires from burning...

Page 61: ...Welding Ag 35 Hot Pipe F R Evaporator Condenser I Pipe Accumulator Suction Pipe Dryer Capi Tube Pipe Suc Conn Pipe Conn B Compressor Flow of Refrigeration Cycle Compressor Pipe Conn B Wire Con Pipe H...

Page 62: ...pth Height 895mm X 731 5mm X 1790mm Find a suitable place to install Sufficient space from refrigerator back to the wall for free air ventilation Avoid direct sunlight Once the installation place is r...

Page 63: ...hinge bolt counterclockwise Disconnect the harness wires 4 Lift up the front of hinge to remove After the hinge is removed the door can fall down forward Be careful 5 Be careful not to damage the wate...

Page 64: ...front to the top hole of door 4 Turn the hinge fastener tightly to The end Connect harness wire and screw ground wire 5 Insert the water tube far into the coupling Replacing Refrigerator Door 1 Insert...

Page 65: ...floor beneath the refrigerator is uneven freezer and refrigerator doors look unbalanced Insert a screw driver flat tip into a groove of the right wheel bottom of refrigerator and turn it clockwise unt...

Page 66: ...ace the filter at least once every 6months When attaching the filter place it for easy access removing replacing 6 After installation of refrigerator and water line system select WATER on your control...

Page 67: ...Water tube Be careful to follow the direction of the nut 3 Insert the Water Tube into the top of Water Valve turn the nut clockwise to fasten it The Water valve is to the right of the motor 4 Check f...

Page 68: ...67 8 5 Dispenser Water Flow...

Page 69: ...er Geared Motor R Sensor R Sensor Inner Controller F Door Switch R Door Switch R Door Switch Freezer Compartment Dispenser Model F Lamp F Fan Motor R Lamp R Fan Motor 9 2 Inner View Refrigerator Compa...

Page 70: ...use Defrost Heater Water Pipe Evaporator Compressor Condenser Dryer Running Capacitor OLP PTC Water Valve Condenser Fan Motor Tray Drip Power cord 9 3 Evaporator Dispenser Model 9 4 Machine Compartmen...

Page 71: ...uide Cab W Tube A Pull forward Ice Maker Pull forward Hose Ice Maker Tube As Remove Water Hose Heater s 2P housing Check Hose Ice Maker Tube As 2 How to check Hose Ice Maker Tube As How to check CRITE...

Page 72: ...mbly SPEC CRITERION GOOD 11 3 10 10 8 12 7 DEFECTIVE Change the Geared Motor PARTS HOW TO CHECK GOOD 145 8 133 156 DEFECTIVE Change the Cube Sol Valve Check resistance value of 2 terminals with a Mult...

Page 73: ...Switch CRITERION GOOD DEFECTIVE Change Micro Switch PARTS HOW TO CHECK SPEC NAME VP333A OD 8 VOLTAGE 125V 3A 10 3 Dispenser Micro Switch 1 Disassembling Procedure Check both terminals red circle with...

Page 74: ...CRITERION Good 215 10 193 236 DEFECTIVE 0 Change Sol Valve PARTS HOW TO CHECK GOOD 96 8 88 104 DEFECTIVE Change Flap Heater AS SPEC NAME SOL2003 01B VOLTAGE 220 240V 50Hz VOLTAGE DC 12V 1 5W Check res...

Page 75: ...ormal OK 10 5 Ice Maker 1 Disassembling Procedure 2 7 Remove 2 screws on top front of ice maker Remove full ice sensing switch and level switch 4 9 Separate Ice Maker Assembly from Frame Ice Maker Rem...

Page 76: ...nge the sensor Full Ice Sensing Switch Check resistance value of 2 terminals with a Multi Tester GOOD DEFECTIVE Change the switch Level Switch Check resistance value of 2 terminals with a Multi Tester...

Page 77: ...013224800 HOSE ICE MAKER TUBE AS FRU 541D 1 1 15 3012530200 GUIDE CAB W TUBE A AS FRU 541D 1 1 16 3011444100 COVER GUIDE CAB W T A HIPS 1 1 17 3011202000 CLAMP WATER TUBE A PA 66 5N 2 2 18 3019974800...

Page 78: ...1 45 3012021700 FIXTURE MOTR PP 1 1 1 1 46 3015916100 MOTOR C FAN AS DC 2213DWCA 3 1 1 1 1 47 3018500300 M BELL B PP 1 1 1 1 48 3018500200 M BELL A PP 1 1 1 1 49 3011834700 FAN ABS OD3 17XD150 1 1 1...

Page 79: ...HELF INMOLDING R C AS FRAME PRINTED GLASS 1 1 1 1 75 3017842920 SHELF INMOLDING R B AS FRAME PRINTED GLASS 1 1 1 1 76 3012514500 GUIDE CASE A L AS ABS 1 1 1 1 77 3012514600 GUDIE CASE A R AS ABS 1 1 1...

Page 80: ...V 50Hz 116 3012520510 GUIDE ICE CRUSHER L ABS 1 1 117 3012517710 GUIDE ICE CRUSHER R ABS 1 1 118 3011115202 CASE I CRUSHER AS FRU 541D 1 1 3001401701 COVER F FAN AS FRU 571I 1 1 3001401711 COVER F FAN...

Page 81: ...1 136 9 3018125800 SWITCH MICRO VP333A 2D x x 1 1 3013600020 240V 15W 3013600050 110V 15W 138 3010544000 BOX DISPNS I SHUT AS FRU 541D x x 1 1 139 3012406900 GRILLE DISPNS ABS x x 1 1 3001401040 COVE...

Page 82: ...TE EMBO x 3000060540 FRU 579B TITANIUM PCM x 3000060710 FRU 549D F TITANIUM PCM x x x 1 161 1 3012318910 GASKET R DR AS PVC MAGNET 1 1 1 1 161 2 3012319300 GASKET H BAR B AS PVC x x x 1 161 3 30181256...

Page 83: ...3018129610 MK4A5Q R1U 3956145250 350VAC 5 3016401170 265RHB S330 3018129600 2 Power Cord Description Part Code Description Part Code 3011304100 3011346701 MP5004 SINGAPORE 3011302870 3011347300 CP 2P...

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